User manual HONEYWELL AQS61

[. . . ] CO2 / TEMPERATURE SENSOR WITH BUILT-IN CONTROLLER FOR WALL MOUNTING GENERAL INFORMATION The AQS51 and AQS61 CO2 / Temperature Sensors are used to measure the concentration and temperature of carbon dioxide in indoor air. The units can be configured as controllers with programmable outputs for both ON/OFF relay control and the linear control of e. g. The wall mounting housing has been designed with snap-in features to minimize installation time. The units can be directly connected to common VAV (Variable Air Volume) controllers, Direct Digital Control (DDC) devices, or standalone control systems. [. . . ] Configuration jumpers for AQS51/61 Function Jumper top position provides a 0 Vdc or 0 mA start point for OUT1 and OUT2 (0. . . 20 mA or 0. . . 10 V). OUT4 has a 0 V output start point when jumper OUT4 is in the "voltage" position (0. . . 10 V). Jumper bottom position provides a 2 Vdc or 4 mA start point for OUT1 and OUT2 (4. . . 20 mA or 2. . . 10 V). OUT4 has a 0 V output start point when jumper OUT4 is in the "voltage" position (0. . . 10 V). Connection in the "current" position provides a 0/4. . . 20 mA output range for OUT1. Connection in the "voltage" position provides a 0/2. . . 10 Vdc output range for OUT1. Connection in the "current" position provides a 0/4. . . 20 mA output range for OUT2. Connection in the "voltage" position provides a 0/2. . . 10 Vdc output range for OUT2. Connection in the "open collector" position provides an open collector output. 0. 5 A, 60 Vdc / 40 Vac (half-wave rectifier). Connection in the "voltage" position provides a 0. . . 10 Vdc output range for OUT4. Push Button Operation for AQS61 This sensor has two push buttons, MENU and ESC, located on the front panel behind the flip-down lid. The YELLOW LED will acknowledge a successful push by a short flash. The push button MENU is available for selection of display value or maintenance commands, whereas ESC is available to escape back from a selected level. centration and temperature (alternating), error code, CO2, temperature, output 1, output 2, or output 4. After the device is powered up, the display will always return to the default display mode Display Modes In the DISPLAY MODE, the push button MENU is used to select the value to be indicated on the display: CO2 con- EN1B-0189GE51 R0102 4 AQS 51/61 CO2 / TEMPERATURE SENSOR WITH BUILT-IN CONTROLLER Maintenance Level A number of execution options are available from the MAINTENANCE MENU (see Table 4). This level is accessed only from the display mode in the OUT1 % selection. Simultaneously pressing two push buttons restricts access, intended for competent trained service personnel only (see Fig. The ENTER command is issued by simultaneously pressing MENU and ESC. Always use the ESC button to return to the MENU selection block in the left-hand portion of Fig. Several pushes of the ESC button may be needed to return to the DEFAULT mode. The ENTER command (press MENU and ESC simultaneously) may result in the execution of functions with temporary or permanent changes to parameters affecting sensor/controller outputs and system operation. Table 4. Maintenance functions available on the AQS61 Function line Display Time limit 1 Functional description For checking/adjusting connected auxiliary equipment. Provides access to a sub-menu in which output selection XX = 1. . . 4 is done by pressing 2 MENU. [. . . ] If the CO2 readings are normal but the error code remains, the temperature sensor might be broken. REMARK: If several errors are detected at the same time, the different error code numbers will be added together into one single error code. Maintenance Basically speaking, the AQS51/61 is maintenance-free. An internal self-adjusting calibration function takes care of normal long-term drift associated with the CO2 sensor. To ensure the highest accuracy, a time interval of max. [. . . ]